PL 
EN 
Opis produktu – E 2.1.1.2 Transformatory trójfazowe
The experiments are carried out using the STE plug-in system Electricity/Electronics.
Objectives
- Recognition of basic physical principles
- Implementation of electrical circuits according to circuit diagrams
Understanding three-phase transformers is one of the key requirements for working with three-phase loads. Three-phase transformers are AC transformers enhanced to handle three-phase current. The primary and secondary windings are provided with six terminals in each case. The vector group determines how the windings are connected, e.g. in a delta-star circuit. Knowledge of such vector groups is important for running multiple three-phase transformers simultaneously.
The equipment set incorporates student experiments which can be carried out in a laboratory safely using safety extra-low voltage. Experiment instructions are contained in a manual in either printed or digital form.
The target group is made up of students in general or vocational education. The experiments are designed as an introduction at a simple level of understanding.
For introductory and more advanced work, the following sets are recommended:
- E2.1.1.1 Electromagnetism & induction
- E2.1.1.3 Three-phase rectification
- E2.1.1.4 Generators and motors
Topics
- Fundamentals of three-phase technology
- Star configuration
- Delta configuration
- Measurement of voltage using multimeters and oscilloscopes
- Root-mean-square and peak values
- Phase-to-phase and line-to-line voltages
- Use of an oscilloscope in a three-phase system
- Measurement of current using a multimeter
- Determination of phase and generator power
- Delta circuits
- Connection of three-phase transformers in Yy configuration
- Quoting the vector group for transformers of different designs
- Connection of three-phase transformers in Dy configuration
- Connection of three-phase transformers in Yd configuration
- Connection of three-phase transformers in interconnected star (zig-zag) configuration
- Three-phase transformer without load
- Symmetrical load
- Asymmetric load between two live conductors
- Asymmetric load between live and neutral conductors
- Voltage transformation without a load
- Power for three-phase loads
- Phase shift without load between primary and secondary windings
| 727 514 | Basic set T 2.4.1, STE | 1 |
| 576 74 | Plug-in board, DIN A4, STE | 1 |
| 578 795 | Three-phase voltage supply, 3×12 V, STE 6/100 | 1 |
| 562 791 | Plug-in power supply, 12 V AC | 1 |
| 501 641 | Two-way adapters, red, set of 6 | 3 |
| 524 013S | Sensor-CASSY 2 Starter | 1 |
| 575 213 | * Oscilloscope 40 MHz, two-channel, analogous | 1 |
| 575 231 | * Probe 100 MHz, 1:1 / 10:1 | 2 |
| 531 282 | * Multimeter Metrahit Pro | 2 |
| 501 23 | Connecting lead, 32 A, 25 cm, black | 9 |
| 501 28 | Connecting lead, 32 A, 50 cm, black | 6 |
| 501 26 | Connecting lead, 32 A, 50 cm, blue | 2 |
| 501 30 | Connecting lead, 32 A, 100 cm, red | 2 |
| 501 33 | Connecting lead, 32 A, 100 cm, black | 2 |
| 501 48 | Bridging plugs, STE 2/19, set of 10 | 2 |
| 565 641L 4 | LIT: Three-phase transformers and three-phase transformer circuits, T 2.4.1 (German) | 1 |
| 565 641S 4 | LIT: Three-phase transformers and three-phase transformer circuits T 2.4.1 (German) | 1 |
| 565 642 4 | * LIT: Three-phase transformers and three-phase transformer circuits T 2.4.1 (English) | 1 |
Articles marked with * are not essential, we do however recommend them to carry out the experiment.
